Sid Meier's Civilization® V: Brave New World is the second expansion pack for Civilization V - the critically acclaimed 2010 PC Game of the Year. It was released on July 9, 2013 in North America and on July 12, 2013 worldwide. This new expansion provides enhanced depth and replayability through the introduction of international trade and a focus on culture and diplomacy. Besides International trade, three brand new systems are introduced - the Ideology system as a late-game Social development, the World Congress as a brand new level of diplomatic interaction between civilizations, and the Archaeology system as an exciting new dive into the game's own history. What's more, the Cultural victory has been completely redone, and it involves now spreading your influence around the world with brand new Great works and Archaeological artifacts; the Diplomatic victory has also been linked to the new World Congress system for a much more sensible way of achieving diplomatic dominance.

Civilization V: Brave New World also introduces nine new civilizations, eight new wonders, two new scenarios, four new gameplay systems and dozens of new units, buildings and improvements offering an expanded variety of ways to build the most powerful empire in the world.

In addition, France has been overhauled to better work with the new cultural aspect of Brave New World, and Arabia has been given a new Unique Ability, likely as its old Unique Ability conflicts with the changes made in Brave New World.

The cultural victory conditions have completely changed, and the task is now to spread your culture across the globe, via a brand new stat - Tourism - and dominate all other cultures. Become the first civilization with a majority influence in all remaining civilizations in the world to achieve a new cultural victory, becoming the envy of the world.

A brand new system has been created, allowing you to research your own and other civilization's past starting from the Industrial Era. After researching the Archaeology technology, you can now train archaeologists to investigate sites of ancient battles and city ruins, which you can then turn into world-famous Landmarks, or from which you can extract priceless cultural artifacts to place into your Museums.

The importance of diplomacy is intensified and city-state alliances are more important than ever. Come the Renaissance Era, the all-new world congress will change the diplomatic terrain, through voting on critical issues like implementing trade sanctions against rogue nations, limiting resource usage, designating host cities for the world games, and banning the construction of nuclear weapons. Game-changing resolutions, vote trading, intrigue and a new lead-in to the diplomatic victory ensures that the end of the game will be more dynamic than ever before.

You can also improve your trade routes through the advancement of economics and technologies, the creation of wonders, and the unique abilities of your civilization. You can connect to a closer city for a lower payoff and a safer route, choose a longer route with more risk for the bigger payoff, or even point your trade route inward, sending vitally important food and production to the far corners of your own empire.

Aesthetics: Becomes available during the Classical Era. Improves the civilization's ability to generate Culture. Adopting Aesthetics allows you to earn Great Writers, Artists, and Musicians 25% faster. Unlocks building the Uffizi.

Exploration: Becomes available during the Medieval Era. Enhances your abilities to spread your empire over the seas and trade overseas. Adopting Exploration gives + 1 Movement for Naval units and +1 Sight for Naval combat units. Unlocks building the Louvre.

Once you either enter the Modern Age or build three Factories, you have to choose the Ideology of your people to streamline the continued social development of your empire. Each ideology grants access to increasingly powerful abilities, and serves the different victory conditions in unique ways, but can also become another cause for divisions among civilizations. Public opinion related to your Ideology now becomes a major source of concern for your Empire in the late game. The choices you make will impact your relationships with other civilizations for the rest of the game.

Each policy tree and ideology now unlocks a particular World Wonder. This means you cannot build a particular Wonder without adopting a certain policy tree first, even though you have the appropriate technological requirement to build it. The list is below:

American Civil War: Fight the "War Between the States" from either the Union or Confederate side as you focus on the critical Eastern theatre of operations between the capital cities of Richmond and Washington.

Scramble for Africa: The great colonial powers of the world are scrambling to explore the Dark Continent and extend their reach into its interior. Search for the great natural wonders of the heart of Africa as you explore a dynamically-generated continent each time you play.

In addition to new features, Brave New World also incorporates all changes from previous expansions and many DLCs, and alters game mechanics added in Gods & Kings to fit the new expansion, including Religion, Espionage, and advanced combat mechanics. This will not, however, add all the nine civilizations (other than Ethiopia) nor the three scenarios included with Gods & Kings.

The changes from Gods & Kings have been enhanced. In espionage, spies have been updated so that they can act as diplomats, who are used to gain support from other civilizations in the World Congress.

Much more importantly, Religion has been updated to include the new cultural and trade route mechanics, and enhanced with new Beliefs, including the new reformation belief, an advanced enhancement belief you can adopt in addition to other religious beliefs when you adopt the Reformation policy in the Piety policy tree. This allows the creation of very powerful tools to aid you on your path to victory.